setjump and longjump

[pal]

hi all,


Can anybody explain about setjump and longjump functions if u have
time to spend on this.

Thanks,
pal

 

[Ravishankar S]

hi all,


Can anybody explain about setjump and longjump functions if u have
time to spend on this.

it is "setjmp" and "longjmp". they provide (among others) a method to do a
non-local goto (goto across functions). any good
C textbook can provide with an example.

 

[steve.pagliarulo]

hi all,

Can anybody explain about setjump and longjump functions if u have
time to spend on this.

Thanks,
pal

setjmp and longjmp are very old and are a primitive a form of
exception handling (conceptually). They definitely should not be used
in new code.

 

[J. J. Farrell]

setjmp and longjmp are very old and are a primitive a form of
exception handling (conceptually). They definitely should not be used
in new code.

Why not?

 

[Eric Sosman]

setjmp and longjmp are very old and are a primitive a form of
exception handling (conceptually). They definitely should not be used
in new code.

They should definitely not be used in most code, but when
they're needed in code new or old, they're the only mechanism
available for the task.

Are you, perhaps, thinking of That Other Language?

 

[Richard Heathfield]

J. J. Farrell said:

Why not?

For the same reason that they shouldn't be used in old code. They suck.

 

[steve.pagliarulo]

Why not?

I should qualify that answer with "unless you have no other choice."
They are simply one of the the biggest hacks ever made. Understanding
the problem might allow suggestions for better solutions.